在加拿大魁北克省蒙特利尔市安装桥梁护栏作为预防自杀的策略。
Installation of a bridge barrier as a suicide prevention strategy in Montréal, Québec, Canada.
机构信息
Direction de Santé Publique de Montréal, Québec, Canada.
出版信息
Am J Public Health. 2013 Jul;103(7):1235-9. doi: 10.2105/AJPH.2012.301089. Epub 2013 May 16.
OBJECTIVES
We investigated whether the installation of a suicide prevention barrier on Jacques-Cartier Bridge led to displacement of suicides to other jumping sites on Montréal Island and Montérégie, Québec, the 2 regions it connects.
METHODS
Suicides on Montréal Island and Montérégie were extracted from chief coroners' records. We used Poisson regression to assess changes in annual suicide rates by jumping from Jacques-Cartier Bridge and from other bridges and other sites and by other methods before (1990-June 2004) and after (2005-2009) installation of the barrier.
RESULTS
Suicide rates by jumping from Jacques-Cartier Bridge decreased after installation of the barrier (incidence rate ratio [IRR] = 0.24; 95% confidence interval [CI] = 0.13, 0.43), which persisted when all bridges (IRR = 0.39; 95% CI = 0.27, 0.55) and all jumping sites (IRR = 0.66; 95% CI = 0.54, 0.80) in the regions were considered.
CONCLUSIONS
Little or no displacement to other jumping sites may occur after installation of a barrier at an iconic site such as Jacques-Cartier Bridge. A barrier's design is important to its effectiveness and should be considered for new bridges with the potential to become symbolic suicide sites.
目的
我们旨在研究雅克·卡地亚大桥（Jacques-Cartier Bridge）上安装防自杀护栏后，是否会导致魁北克省蒙特利尔岛（Montréal Island）和蒙塔日地区（Montérégie）的自杀事件转移到其他跳桥地点，这两个地区都与大桥相连。
方法
我们从首席验尸官的记录中提取了蒙特利尔岛和蒙塔日地区的自杀事件。我们使用泊松回归来评估在安装护栏之前（1990 年 6 月 2004 年）和之后（2005 年 2009 年），通过从雅克·卡地亚大桥和其他桥梁以及其他地点跳下和其他方式自杀的年度自杀率变化。
结果
安装护栏后，从雅克·卡地亚大桥跳下的自杀率下降（发生率比 [IRR] = 0.24；95%置信区间 [CI] = 0.13, 0.43），当考虑到该地区所有桥梁（IRR = 0.39；95% CI = 0.27, 0.55）和所有跳桥地点（IRR = 0.66；95% CI = 0.54, 0.80）时，这种情况仍然存在。
结论
在标志性地点（如雅克·卡地亚大桥）安装护栏后，可能几乎不会或不会发生转移到其他跳桥地点的情况。护栏的设计对其效果很重要，对于有潜力成为象征性自杀地点的新桥，应考虑其设计。
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